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Wyszukujesz frazę "suspension of a motor truck" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
A numerical analysis of a double multi-leaf spring model
Autorzy:
Wysocki, J.
Krasoń, W.
Powiązania:
https://bibliotekanauki.pl/articles/245995.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
FEM
numerical models
double multi-leaf spring
suspension of a motor truck
Opis:
The use of a double spring in a vehicle suspension as a combination of elastic components of characteristics which are approximate to linear ones gives a nonlinear suspension nature, which should approximately meet the criterion of car motion smoothness connected with keeping the frequency of the free vibrations of the a motorcar body in the range of l - 2 Hz, in the whole range of load changes (cargo) [see references 8, 10]. The subject of considerations is a prototypical double spring that consists of a four-leaf main spring and a two-leaf auxiliary spring and is meant for the family of motor trucks (delivery trucks) of a total mass of about 3,51. The presence of a clearance between the main spring and the auxiliary spring is the specificity of the aforementioned structural solution. In the present study, there are presented different variants of FEM numericał models ofa double spring as well as selected aspects of their applications at the stage of the research on the displacements and deformations of selected structural components. The structures ofa two-dimensional beam model, a three-dimensional shell model and a solid model of a double spring are discussed. Moreover, the study discusses different approaches in the modelling of the effect of contact between particular leaves and their influence on analysis results. Selected model tests results were compared with experimental research results.
Źródło:
Journal of KONES; 2009, 16, 1; 541-550
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental verification of numerical test results for a double multi- leaf spring
Autorzy:
Krasoń, W.
Wysocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/242087.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
experimental verification
FEM
numerical models
double multi-leaf spring
suspension of a motor truck
Opis:
A double spring used in the vehicle suspension, as a combination of spring elements of characteristics close to linear ones, actually provides non-linear suspension characteristics. Due to requirements for the truck suspension being designed, the spring characteristics in the whole range of load changes should meet the vehicle motion smoothness related to keeping the frequency of own suspension vibrations within a range of l-2 Hz [8, l0]. A prototype double spring made of a four-leaf main spring and two- leaf auxiliary spring (Fig. 1) makes a subject of considerations. Characteristic features of that structural solution includes a clearance between the main spring and the auxiliary spring. This work presents the results of numerical tests for three models of MES double spring [23] that were compared with experimental test results. An evaluation of usability of individual numerical models was made for representation of a double spring characteristics, contact between individual leaves and regular stress in the main leaf (the so-called safety leaf). The smallest differences between the stress results obtained from numerical tests compared to the laboratory tests, for the beam and shell models, have been obtained only for one extreme main (longest) leaf.
Źródło:
Journal of KONES; 2009, 16, 3; 185-193
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of vibrations of the simplified model of the suspension system with a double spring and a fluid damper
Autorzy:
Krasoń, W.
Wysocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/244562.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
FEM
numerical models
double multi-leaf spring
suspension of a motor truck
viscous damper
Opis:
The subject of the paper are forced vibrations of the rear suspension of the biaxial vehicle fitted with the double spring spatial shell model and the viscous damper, under the force pulse input with the given transient response. The play between the master and auxiliary spring is a specific feature of the double spring design [1, 6]. Numerical tests were taken for three variants of the viscous attenuation. The attenuation coefficient values for typical dependent suspensions and their range of changes were assumed on the basis of publication [14]. The problem of modelling and analysing, including contact issues, was solved with the use of the MSC Software programme package with the special use of MSC Patran pre-processor [12]. The numerical analysis of the suspension model with the geometrical nonlinearities, viscous attenuation, and time-varying load was taken with the use of the finite element method (FEM). The selected results of the model tests in the form of the suspension relative displacements (speeds) and deformations (stresses) for the selected points of the master and auxiliary spring against time are presented in the paper. The complete model of the suspension system makes possible to examine the influence of various inputs on the interoperation and the phenomena associated with the dynamic response of such a complex system.
Źródło:
Journal of KONES; 2011, 18, 1; 311-316
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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